Fusion Materials Semiannual Progress Report for the Period Ending December 31, 2020

Chad Parish; Yutai Kato; Stephanie Melton

doi:10.2172/1783295

Fusion Materials Semiannual Progress Report for the Period Ending December 31, 2020

Chad Parish
, Yutai Kato
, Stephanie Melton

Research output: Other contribution › Technical Report

Abstract

Three ferritic/martensitic alloys; F82H, Fe8Cr2W and CNA3 were studied for the effect of H and He on swelling. Single ion beam (Fe²⁺), dual ion beam (Fe²⁺+He²⁺), and triple ion beam (Fe²⁺+He²⁺+H⁺) irradiations were conducted at 500°C to a damage level of 50 dpa and dual and triple beam irradiation experiments were conducted at 450°C to 50 dpa. Cavity distribution and swelling were comparable in dual ion beam and triple ion beam irradiated F82H at 500°C, indicating that the role of hydrogen in swelling in triple beam irradiated F82H appeared to be insignificant compared to the role of helium. Swelling in Fe8Cr2W and CNA3 at 500°C was approximately 3-4X greater than that at 450°C. In F82H, the average cavity size and swelling were minimally larger at 500°C than at 450°C. The significant role of hydrogen in swelling has yet to be confirmed. Future efforts will focus on separate effects experiments to understand the role of hydrogen in cavity swelling.

Original language	English
Place of Publication	United States
DOIs	https://doi.org/10.2172/1783295
State	Published - 2020

Keywords

70 PLASMA PHYSICS AND FUSION TECHNOLOGY

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title = "Fusion Materials Semiannual Progress Report for the Period Ending December 31, 2020",

abstract = "Three ferritic/martensitic alloys; F82H, Fe8Cr2W and CNA3 were studied for the effect of H and He on swelling. Single ion beam (Fe2+), dual ion beam (Fe2++He2+), and triple ion beam (Fe2++He2++H+) irradiations were conducted at 500°C to a damage level of 50 dpa and dual and triple beam irradiation experiments were conducted at 450°C to 50 dpa. Cavity distribution and swelling were comparable in dual ion beam and triple ion beam irradiated F82H at 500°C, indicating that the role of hydrogen in swelling in triple beam irradiated F82H appeared to be insignificant compared to the role of helium. Swelling in Fe8Cr2W and CNA3 at 500°C was approximately 3-4X greater than that at 450°C. In F82H, the average cavity size and swelling were minimally larger at 500°C than at 450°C. The significant role of hydrogen in swelling has yet to be confirmed. Future efforts will focus on separate effects experiments to understand the role of hydrogen in cavity swelling.",

keywords = "70 PLASMA PHYSICS AND FUSION TECHNOLOGY",

author = "Chad Parish and Yutai Kato and Stephanie Melton",

year = "2020",

doi = "10.2172/1783295",

language = "English",

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TY - GEN

T1 - Fusion Materials Semiannual Progress Report for the Period Ending December 31, 2020

AU - Parish, Chad

AU - Kato, Yutai

AU - Melton, Stephanie

PY - 2020

Y1 - 2020

N2 - Three ferritic/martensitic alloys; F82H, Fe8Cr2W and CNA3 were studied for the effect of H and He on swelling. Single ion beam (Fe2+), dual ion beam (Fe2++He2+), and triple ion beam (Fe2++He2++H+) irradiations were conducted at 500°C to a damage level of 50 dpa and dual and triple beam irradiation experiments were conducted at 450°C to 50 dpa. Cavity distribution and swelling were comparable in dual ion beam and triple ion beam irradiated F82H at 500°C, indicating that the role of hydrogen in swelling in triple beam irradiated F82H appeared to be insignificant compared to the role of helium. Swelling in Fe8Cr2W and CNA3 at 500°C was approximately 3-4X greater than that at 450°C. In F82H, the average cavity size and swelling were minimally larger at 500°C than at 450°C. The significant role of hydrogen in swelling has yet to be confirmed. Future efforts will focus on separate effects experiments to understand the role of hydrogen in cavity swelling.

AB - Three ferritic/martensitic alloys; F82H, Fe8Cr2W and CNA3 were studied for the effect of H and He on swelling. Single ion beam (Fe2+), dual ion beam (Fe2++He2+), and triple ion beam (Fe2++He2++H+) irradiations were conducted at 500°C to a damage level of 50 dpa and dual and triple beam irradiation experiments were conducted at 450°C to 50 dpa. Cavity distribution and swelling were comparable in dual ion beam and triple ion beam irradiated F82H at 500°C, indicating that the role of hydrogen in swelling in triple beam irradiated F82H appeared to be insignificant compared to the role of helium. Swelling in Fe8Cr2W and CNA3 at 500°C was approximately 3-4X greater than that at 450°C. In F82H, the average cavity size and swelling were minimally larger at 500°C than at 450°C. The significant role of hydrogen in swelling has yet to be confirmed. Future efforts will focus on separate effects experiments to understand the role of hydrogen in cavity swelling.

KW - 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

U2 - 10.2172/1783295

DO - 10.2172/1783295

M3 - Technical Report

CY - United States

ER -

Fusion Materials Semiannual Progress Report for the Period Ending December 31, 2020

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